10W30 Vs 5W30 - does it matter?

  • Thread starter Thread starter Lindyhop
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Lindyhop

After putting 5W30 Mobil1 in my 2003 Elantra (19k miles) I noticed the manual recommends 10W30. Is there any reason that 5W30 would be a problem? Temperatures in my driving area are generally moderate (40F-90F).
 
I wouldn't think it would be a problem, but I'd use whatever the manual
recommends to be safe.
 
Lindyhop said:
After putting 5W30 Mobil1 in my 2003 Elantra (19k miles) I noticed the manual recommends 10W30. Is there any reason that 5W30 would be a problem? Temperatures in my driving area are generally moderate (40F-90F).
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The '04 manual recommends either one, or 10W-40, depending on the temp
conditions you drive in. Since you're using a synthetic, it really
doesn't matter and any of them will provide good protection. Probably
the ultimate in terms of gas mileage with excellent protection would be
one of the new 0W-40 oils and I'll probably try that at the next change.
 
Thanks for all the responses. By the way, I've never heard of 0W-40 oil before. Who makes this stuff?
 
To answer my own question <g>...just discovered Mobil 0W40 at www.mobil1.com



Thanks for all the responses. By the way, I've never heard of 0W-40 oil before. Who makes this stuff?
 
Lindyhop said:
To answer my own question <g>...just discovered Mobil 0W40 at www.mobil1.com
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Several companies are making it now. You may see it referred to as
"Euro-spec" oil, as it's apparently becoming the standard there.
 
Thanks for all the responses. By the way, I've never heard of 0W-40 oil =
before. Who makes this stuff?
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The pioneering leader in the synthetic lubricants industry; AMSOIL.

All the Best,
Steve
15 year independent AMSOIL Synthetic Lubricants Dealer
Offering wholesale prices to all
Dealerships available
E-mail me for details

To respond via e-mail, simply take the, "REMOVEXX" out of my return e-mail
address.
 
The pioneering leader in the synthetic lubricants industry; AMSOIL.

All the Best,
Steve
15 year independent AMSOIL Synthetic Lubricants Dealer
Offering wholesale prices to all
Dealerships available
E-mail me for details

To respond via e-mail, simply take the, "REMOVEXX" out of my return e-mail
address.
Click to expand...
What a waste of Money..Have you ever seen a leading car manufacturer
endorse Synthetic Oil???
 
What a waste of Money..Have you ever seen a leading car manufacturer
endorse Synthetic Oil???
====================================
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I don't know if this is an 'endorsement' but I believe Corvettes
come with Mobil 1 as the factory fill. Perhaps some other marques
also?

S25
 
Gman said:
What a waste of Money..Have you ever seen a leading car manufacturer
endorse Synthetic Oil???
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Yeah, lots of them. Many new models come with synthetic oil in the
crankcase and synthetics are required for warranty purposes. This
doesn't apply to Hyundais, but that doesn't mean that it's not beneficial.

Additionally, synthetics do not have to be much more expensive than
"dinosaur" oil. Super Tech Full Synthetic from Walmart is only $11 for a
5 quart jug. Independent oil lab tests indicate that it's every bit as
good as other synthetics.
 
Additionally, synthetics do not have to be much more expensive than
"dinosaur" oil. Super Tech Full Synthetic from Walmart is only $11 for a
5 quart jug. Independent oil lab tests indicate that it's every bit as
good as other synthetics.
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Really? That crappy wal-mart super tech is as good as the top syns? I
may look at it next oil change.
 
Jeff said:
Really? That crappy wal-mart super tech is as good as the top syns? I
may look at it next oil change.
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There's nothing "crappy" about it or any of the other Super Tech oils.
They're blended by a reputable company that does oils for several other
brands. I recently saw an independent oil lab analysis of the ST
synthetic that showed it had the same type of base stock and additive
package as several "name brand" synthetic oils. The conclusion of the
lab was that it was equivalent quality to other synthetic oils.
 
You mean GM with the 'Vette coming from the factory with Mobil 1, or
Mercedes, Ferrari, Masserati, Rolls Royce,
Bently, VW, and at least two others who ship vehicle with synthetic in
them. I guess that isn't an endorsement huh......
 
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